<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Feed
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Rss.php 23775 2011-03-01 17:25:24Z ralph $
 */

/**
 * @see Zend_Feed_Entry_Abstract
 */
require_once 'Zend/Feed/Entry/Abstract.php';

/**
 * Concrete class for working with RSS items.
 *
 * @category   Zend
 * @package    Zend_Feed
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Feed_Entry_Rss extends Zend_Feed_Entry_Abstract {
	/**
	 * Root XML element for RSS items.
	 *
	 * @var string
	 */
	protected $_rootElement = 'item';
	
	/**
	 * Overwrites parent::_get method to enable read access
	 * to content:encoded element.
	 *
	 * @param  string $var The property to access.
	 * @return mixed
	 */
	public function __get($var) {
		switch ($var) {
			case 'content' :
				$prefix = $this->_element->lookupPrefix ( 'http://purl.org/rss/1.0/modules/content/' );
				return parent::__get ( "$prefix:encoded" );
			default :
				return parent::__get ( $var );
		}
	}
	
	/**
	 * Overwrites parent::_set method to enable write access
	 * to content:encoded element.
	 *
	 * @param  string $var The property to change.
	 * @param  string $val The property's new value.
	 * @return void
	 */
	public function __set($var, $value) {
		switch ($var) {
			case 'content' :
				parent::__set ( 'content:encoded', $value );
				break;
			default :
				parent::__set ( $var, $value );
		}
	}
	
	/**
	 * Overwrites parent::_isset method to enable access
	 * to content:encoded element.
	 *
	 * @param  string $var
	 * @return boolean
	 */
	public function __isset($var) {
		switch ($var) {
			case 'content' :
				// don't use other callback to prevent invalid returned value
				return $this->content () !== null;
			default :
				return parent::__isset ( $var );
		}
	}
	
	/**
	 * Overwrites parent::_call method to enable read access
	 * to content:encoded element.
	 * Please note that method-style write access is not currently supported
	 * by parent method, consequently this method doesn't as well.
	 *
	 * @param  string $var    The element to get the string value of.
	 * @param  mixed  $unused This parameter is not used.
	 * @return mixed The node's value, null, or an array of nodes.
	 */
	public function __call($var, $unused) {
		switch ($var) {
			case 'content' :
				$prefix = $this->_element->lookupPrefix ( 'http://purl.org/rss/1.0/modules/content/' );
				return parent::__call ( "$prefix:encoded", $unused );
			default :
				return parent::__call ( $var, $unused );
		}
	}
}
